Tractor



March 23 1926. 1,577,779

I R. E. WHITE TRACTOR Fiyad April 17, 1922 5 Sheets-Sheet 1 Flat 3mm Robin. Euwmmwu \TE.

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R. E. WHITE TRACTOR Filed April 17 1922 3 Sheets-Sheet 2 3mm Roaam. Eawmu Ma ra March 23 1926.

R. E. WHITE TRACTOR Filed April 17, 1922 3 Sheets-Sheet '5 Row. EnwmuNh-u'va.

W ,wkmwm Patented Mar. 23, E26.

iihil lED v ROBERT EDWARD WHITE,

or sivrrtrns canals, MICHIGAN.

sanction,

Application filed April 17, 1922. Serial No. 553,534.

To a Hi/l? it wmg concern Be it known that L'Ronnn'r lVIIrrn, a citizen of the Unite: 55 interim residing at Smiths Creek. county of St. Clair and State of htlichigan, have invented certain new and useful lint proveincnts in Tractors, of which the following a specification, reference being had therein to the accompanying drawings.

This invention relates to tractors and the invention consists in the structural features and arrangement of parts hereinafter described and fully illustrated in the accompanying drawings wherein Figure 1 is a plan view of the improved tractor;

Figure 2 is a longitudinal sectional elevation of the same, taken on line 2-2 of Figure 1;

Figure 3 is a diagrammatic side elevation showing how the wheels adapt themselves to uneven ground;

Figure 4E isa rear view of the tractor;

Figure 5 is a fragmentary front view showing a pair of brackets respectively carried by two members of the frame to guide them on a relative pivotal movement;

Figure (5 is a sectional view of a braking control for steering, the section being taken on line 6-6 of Figure 1.

In these views the reference characters 1 and 2 designate complementary frame members which are co-extensive from front to back, the former having a width preferably somewhat greater than the latter. 3 is a housing for a differential gearing, and 4 tubular extensions of said housing, in which are mounted aligned shafts 5 adapted to be differentially driven through said gearing. 6 is the usual engine through which the shafts 5 are driven, said engine being mounted preferably on the larger frame member. 7 and 8 designate respectively front and rear pairs of carrying wheels, and 9 a pair of intermediate and somewhat larger wheels. 10, 11 and 12 are the axle members for the front intermediate and rear wheels respectively. Each of said axle members is formed in two parts, which are independently journaled upon the respective members 1 and 2 in suitable bearings 13, said parts being aligned when said frame members are in registering relation.

The frame members 1 and 2 pivotally engage the tubular members 4, and are adapted to swing independently about the axis esment by ergagenu-ait tablished by said members. Said frame members are guided in such relative moveof an arm torwardly projecting from the member in a slot 15 vertically termed in a bracket incur her 15 secured to the front end of the memher 1. This coga elin it. while permitting a n r 'ce relative angular movement between the axle meinbtn's 12- are each driven throi g h gear trains 16 2st, Thus it is seen that the invention provides a six-wheel drive, insuring a very powerful traction.

Upon the outcrend portions of the shafts brake drums 20 are respectively mounted and are engaged by lnalte-bands 27. Provision is made for a ternatively exercising a braking effect through the bands 27 and drums 26 upon either drive shaft 5, so as to concentrate the power upon the other shaft and thereby effect the desired turning of the vehicle. Thus, 28 is a slide bar mounted transversely of the vehicle and having wedge forming end portions engaging the rake bands 27 to selectively tighten the same upon their brake drluns according to the direction of sliding'of said bar, and 29 is a control lever for said bar intermediately fulcrurned above the latter, as indicated at 29, and pivoted at its lower end to said bar. The ends of the bar engage between rolls 30 secured to the brake band extremities (see Figure 6) and are thus adapted to control the tension of said bands.

A winch 31 may be mounted on the shaft of one of the gears 22 to adapt the tractor to pull itself out of mud holes or the like.

It is a distinctive feature of the decribed tractor that four supporting wheels thereof will engage the ground however uneven the surface of the latter may be. Thus the described tractor is peculiarly adapted for use upon rough or hilly grounds, since it main tains a firm support under all conditions of use, and furthermore develops under all conditions a powerful traction, since all of he wheels are driven.

What- I claim as my invention is 1. A tractor comprising a pair of longiall of said wheels,

tudinal frame members, a transverse tubular member pivotally connecting said frame members, three or more pairs of ground engaging wheels journaled on said frame members, a motor mounted upon one frame member, transmission mechanism extending through said tubular member, and gearing upon each of said frame member, to said transmission mechanism for driving the pivotal connection of said frame members allowing atleast four of said driven wheels to engage the ground.

2. [a tractor frame comprising relatively pivotal members having a common axis, a plurality of carrying wheels of varying diameters independently mounted upon each of said members, driven pinions parallelly arranged with respect to said wheels, and aligned gear connections between said pinions and wheels respectively for driving the latter.

3. A tractor comprising a pair of complimentary frame members arranged side by side, means pivotally connecting said members intermediate their length, a plurality of carrying wheels of varying diameters independently mounted upon each of said members, driven pinions and gears carried by said frame members and wheels respectively for transmitting the driving torque to each wheel separately.

4-. A tractor comprising a frame composed of relatively pivotal complementary memconnected bers, carrying wheels of independently mounted upon each of said complementary members, intermeshing gears carried by said wheels and frame members respectively, and means for driving said gears to drive each of said wheels separately.

5. A tractor comprising a frame formed of complementary relatively pivotal members, front, rear and intermediate wheels independently mounted upon each of said frame members respectively, said interme diate wheels being of greater diameter than said other wheels, and means for driving each of said wheels.

6. In a tractor the combination of a pair of rigid longitudinal frame members, three or more ground engaging wheels on each of said rigid frame members, and means for pivotally connecting said rigid frame members to allow at least four of said wheels to engage the ground under all conditions.

7. In a tractor, the combination of a pair of rigid longitudinal frame members, three or more ground engaging wheels on each of said frame members, means for positively driving all of said wheels, and means for pivotally connecting said rigid frame me1nhere to allow at least four of said driven wheels to engage the ground under all conclitions.

In testimony whereof I affix my signature.

varying diameters ROBERT EDWARD WVHITE. 

